3M 3431-5205 Rectangular Connector Header - Equivalent & Substitute Parts

Part Overview

The 3M 3431-5205 is an active rectangular connector header designed for through-hole, right-angle board-to-board or cable applications. This 34-position, 2-row connector with 0.100" (2.54mm) pitch provides shrouded 4-wall construction with wire wrap termination and latch lock/eject fastening. The part is RoHS compliant and rated for -55°C to 105°C operation. Substitute parts are identified when equivalent electrical and mechanical parameters are maintained while offering alternative termination methods, packaging configurations, or series variants.

Key Parameters

Parameter	Value
Connector Type	Header
Contact Type	Male Pin
Number of Positions	34
Number of Rows	2
Pitch - Mating	0.100" (2.54mm)
Row Spacing - Mating	0.100" (2.54mm)
Mounting Type	Through Hole, Right Angle
Shrouding	Shrouded - 4 Wall
Contact Length - Mating	0.240" (6.10mm)
Insulation Height	0.340" (8.64mm)
Operating Temperature	-55°C ~ 105°C
Current Rating	1.75A
Material Flammability Rating	UL94 V-0
RoHS Status	RoHS Compliant
Moisture Sensitivity Level	1 (Unlimited)

Substitute Part Grouping Explanation

The substitute part D3431-5002-AR is functionally equivalent to the 3431-5205 based on the following critical parameters that determine substitutability:

Connector geometry: Both maintain 34 positions, 2 rows, 0.100" (2.54mm) pitch, and 0.100" row spacing
Mating interface: Both feature 0.240" (6.10mm) contact length for mating and 0.340" (8.64mm) insulation height
Electrical performance: Both rated at 1.75A current capacity and -55°C to 105°C operating temperature
Mechanical construction: Both use shrouded 4-wall design with through-hole, right-angle mounting
Compliance: Both are RoHS compliant with UL94 V-0 flammability rating and MSL 1

The primary differences are termination method (wire wrap vs. solder), fastening type (latch lock/eject hooks vs. push-pull), contact post length, and series designation (3000 vs. D3000).

Parameter Comparison

Parameter	3431-5205	D3431-5002-AR
Manufacturer	3M	3M
Category	Rectangular Connectors	Rectangular Connectors
Connector Type	Header	Header
Contact Type	Male Pin	Male Pin
Number of Positions	34	34
Number of Rows	2	2
Pitch - Mating	0.100" (2.54mm)	0.100" (2.54mm)
Row Spacing - Mating	0.100" (2.54mm)	0.100" (2.54mm)
Mounting Type	Through Hole, Right Angle	Through Hole, Right Angle
Shrouding	Shrouded - 4 Wall	Shrouded - 4 Wall
Contact Length - Mating	0.240" (6.10mm)	0.240" (6.10mm)
Insulation Height	0.340" (8.64mm)	0.340" (8.64mm)
Operating Temperature	-55°C ~ 105°C	-55°C ~ 105°C
Current Rating (Amps)	1.75A	1.75A
Material Flammability Rating	UL94 V-0	UL94 V-0
Insulation Color	Black	Black
RoHS Status	RoHS Compliant	ROHS3 Compliant
Moisture Sensitivity Level	1 (Unlimited)	1 (Unlimited)
Termination	Wire Wrap	Solder
Fastening Type	Latch Lock/Eject Hooks, Short	Push-Pull
Contact Length - Post	0.610" (15.49mm)	0.112" (2.84mm)
Contact Finish - Mating	Gold	Gold
Contact Finish - Post	Tin-Lead	Tin
Contact Material	Copper Alloy	Brass
Product Status	Active	Active

Engineering Selection Recommendations

Both the 3431-5205 and D3431-5002-AR are active products with equivalent electrical and mechanical specifications for the mating interface. Selection between these parts is determined by termination requirements and assembly method:

3431-5205 is specified when wire wrap termination is required for the application
D3431-5002-AR is specified when solder termination is required for the application

Both parts maintain identical mating contact geometry, pitch, row spacing, and electrical ratings. Both are RoHS compliant with equivalent environmental and thermal performance. The D3431-5002-AR offers ROHS3 compliance, representing a more recent certification status. Contact post length and material differ between the parts due to their respective termination methods, but these differences do not affect mating interface compatibility.

Frequently Asked Questions (FAQ)

Q: Can D3431-5002-AR be used as a direct replacement for 3431-5205?

A: Substitution is possible only if the application can accommodate solder termination instead of wire wrap termination. The mating interface parameters are identical, but the termination method and contact post geometry differ. Verify that your assembly process and PCB design support solder termination before substituting.

Q: What are the key differences between these two parts?

A: The primary differences are termination method (wire wrap vs. solder), fastening type (latch lock/eject hooks vs. push-pull), contact post length (0.610" vs. 0.112"), contact material (copper alloy vs. brass), and contact finish on the post (tin-lead vs. tin). The mating interface, pitch, row spacing, current rating, and operating temperature are identical.

Q: Are both parts RoHS compliant?

A: Yes. The 3431-5205 is RoHS Compliant, and the D3431-5002-AR is ROHS3 Compliant. Both meet RoHS requirements.

Q: What is the difference in packaging between these parts?

A: The 3431-5205 packaging is not specified in the provided data. The D3431-5002-AR is packaged in Tray format.

Q: Do these parts have the same current rating?

A: Yes. Both parts are rated for 1.75A current capacity.

Q: What is the operating temperature range for both parts?

A: Both parts operate across the identical temperature range of -55°C to 105°C.

Q: Can I use these parts interchangeably in my design?

A: Interchangeability depends on your termination method requirements. If your design uses wire wrap termination, use 3431-5205. If your design uses solder termination, use D3431-5002-AR. The mating interface is identical, but the termination and fastening methods differ.

Request Quote (Ships tomorrow)

Part Number

Quantity

Company

Contact Name

E-mail

Message